Originally Posted by
Lurina
I don't want to speak too much for the OP, but I think fussing over the technical nature of the Sundering and beings made of aether vs. dynamis is kinda missing the point a bit.
What it comes down to is that the reconstructed races of Ultima Thule haven't fundamentally changed in their lived nature. The Nibirun (and the Ea, and sort of the Omicrons) are still presented as immortal, "transcendent" beings. However, the narrative of the Omicron questlines does not frame this as an impassable obstacle to them ultimately finding happiness and meaning.
In comparison, the narrative surrounding the Ancients treats their immortality and special powers as a "problem" that was ultimately precluding sustainable happiness and leading to their doom, and so had to be removed. This leads to an apparent contradiction that I think you can interpret in one of two ways:
1) The writers just aren't on the same page, and whoever wrote the Omicron questline has a fundamentally different philosophical opinion on how immortality and godlike power would transform the human condition and the capacity for individuals to find constructive meaning in their lives, versus whoever ultimately made the call on the Sundering plotline would be presented in the MSQ. Alternatively, they wrote themselves into a corner with the Ancients and it coming across that way in the first place was an accident, or maybe the writer for the Omicron quests just didn't care that deeply about Endwalker's specific themes to begin with and so contradicted them incidentally while writing their uplifting story about making some aliens happy.
2) We're not supposed to understand immortality and godlike power as inherently bad, but rather something that only caused circumstantial problems for the Ancients because of the way their culture had developed and specific events had played out. Thus, the Sundering was not "necessary" insofar as they had the potential (however unlikely you regard it as being reached) for cultural transformation that could solve the problem in lieu of physical transformation.